The idea of the cameras would be to stop the cyclists who are not savvy enough to realise they should not be going up the inside the lorries being run down I am not saying that we should all just ride up the inside of lorries turning left as for your comment about trusting strangers with your life of course you need to do that to some extent or do you check behind you every time you hear a car behind you to see that they have seen you/ aren't texting their mate or talking on their phone even driving a car there has to be some form of trust with other road users.

The [new EU] regulation stipulates that all vehicles over 3.5 tons need to be fitted with new wide angle (class IV) and kerb mirrors (class V), that meet with the new legislation, by the 31 march 2009, this is in addition to the front view mirror introduced in January 2007.
The new directive improves the driver’s visibility of pedestrians or cyclists when the vehicle is making left turn (right hand drive vehicles) or right turn (left hand drive vehicles).

At 3:00 he states that he has no real blindspots and using the mirrors he can see all round the front of his cab and down the side of the lorry.
At 10:00 he demonstrates this by showing us the mirrors.